Answer:
29260J
Explanation:
Given parameters:
Mass of water sample = 100g
Initial temperature = 30°C
Final temperature = 100°C
Unknown:
Energy required for the temperature change = ?
Solution:
The amount of heat required for this temperature change can be derived from the expression below;
H = m c (ΔT)
H is the amount of heat energy
m is the mass
c is the specific heat capacity of water = 4.18J/g°C
ΔT is the change in temperature
Now insert the parameters and solve;
H = 100 x 4.18 x (100 - 30)
H = 100 x 4.18 x 70 = 29260J
Answer:
Since AlCl3 sublimes and NaCl does not sublime sublimation process will separate the two. Heat the mixture, aluminium chloride sublimes into vapour and forms the sublimate on the cooler parts of heating tube sodium chloride will remain at the bottom of the heating tube.
Explanation:
I hope it helps you ..
Answer:
a) 
b) 
c) 
Explanation:
From the question we are told that:
Moles 0f Nitrogen 
Moles 0f Oxygen 
Volume Decrease 
Generally, the equation for Concentration is mathematically given by
For Nitrogen
For Oxygen
For Nitrogen
Metals, for example Cesium and Francium
Answer : The volume of gas occupy at a pressure of 18 psi is, 520.8 mL
Explanation :
Boyle's Law : It is defined as the pressure of the gas is inversely proportional to the volume of the gas at constant temperature and number of moles.
or,
where,
= initial pressure = 12.5 psi
= final pressure = 18 psi
= initial volume = 750 mL
= final volume = ?
Now put all the given values in the above equation, we get:
Thus, the volume of gas occupy at a pressure of 18 psi is, 520.8 mL
